With a simple VSWR indicator I can take an educated guess at whether the Impedance is higher or lower than my feedline. I used to do this with a GDO* and a noise bridge. At this point I have no idea what the VSWR is. Good luck and keep us posted on your progress. This might help with some dimensions, but there should be a specific antenna calculator some where on the Internet I would guess. The model also shows 12.18 dbi gain with -10 reflection and that is off a bit from Maco's published performance results. Wire diameters must also be considered and the real antenna uses tapered element and wire at the top. I cannot model such bends, so I use these additional short straight wires to simulate the curved portions. The tips of the Maco VQ are bent to connect to the top wire.the primary radiating element. The short wires #5 & #7 were used due to limitations in modeling. #Help i deleted my antnotes pdf#The PDF file below shows the dimensions in inches for each wire on the driven element. That said however, the model looks reasonable to me. I suspect that may have something to do with this Quad having only 3 sides instead of 4.Įznec does not allow the use of taper and I'm not too sure about the results I got using #12 wire attached to the aluminum parts of the radiator, because that too is using taper. That said however, all the elements are longer than usual relative to what we tend to think for a typical 1/4 wave element length at 27.205 MHz. This model has the radiator wires angled at 45* degrees, so the overall span is 90* degrees. I'm assuming you are not planning on just building a bent dipole here.īelow is my old Horizontal model of the Maco 2 element V Quad, to specs, shows a great match, with modest gain.
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